How to Reset the Lexus Fuel Injector Warning Light?
2 Answers
Shift the gear lever to the P position. Start the engine. Turn on the defroster switch, then press and release the brake pedal 4 times within 20 seconds. Turn off the defroster switch, then press and release the brake pedal 4 times within 20 seconds. Confirm that the warning light turns off.
Last time the check engine light came on in my Lexus, and the dashboard indicated a fuel injector issue. To turn off the light, the key is to fix the problem first and then use a diagnostic tool to clear the trouble codes. Here’s how I usually handle it: First, I buy or borrow an OBD-II scanner, plug it into the port under the steering wheel, power it on, and read the specific error codes. If it’s a clogged fuel injector, I clean it—removing the injector, spraying or soaking it with a specialized cleaner, and reinstalling it. If it’s severely damaged, I replace it with a new one. After the repair, I go into the scanner’s menu and select "clear trouble codes," and the light immediately turns off. But don’t just clear the light without fixing the root cause—otherwise, the light will reappear quickly, causing more damage. I recommend regular injector maintenance, like adding fuel system cleaner every 5,000 km to prevent clogs, and using high-quality gasoline while driving to avoid issues. It’s best to wear gloves and handle the disassembly carefully to avoid damaging the seals. During this process, I always check the fuel filter and sensors to ensure the overall health of the system, keeping the car running smoothly with normal fuel consumption.
